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CN202535449U - Press plate - Google Patents

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Publication number
CN202535449U
CN202535449U CN201220171733.8U CN201220171733U CN202535449U CN 202535449 U CN202535449 U CN 202535449U CN 201220171733 U CN201220171733 U CN 201220171733U CN 202535449 U CN202535449 U CN 202535449U
Authority
CN
China
Prior art keywords
pressing plate
light
medium
dazzle
read
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN201220171733.8U
Other languages
Chinese (zh)
Inventor
河田宪吾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PFU Ltd
Original Assignee
PFU Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PFU Ltd filed Critical PFU Ltd
Application granted granted Critical
Publication of CN202535449U publication Critical patent/CN202535449U/en
Anticipated expiration legal-status Critical
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B2207/00Coding scheme for general features or characteristics of optical elements and systems of subclass G02B, but not including elements and systems which would be classified in G02B6/00 and subgroups
    • G02B2207/123Optical louvre elements, e.g. for directional light blocking
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • G02B5/0205Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • G02B5/0205Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0257Diffusing elements; Afocal elements characterised by the diffusing properties creating an anisotropic diffusion characteristic, i.e. distributing output differently in two perpendicular axes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/191Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/192Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
    • H04N1/193Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04Scanning arrangements
    • H04N2201/0402Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0422Media holders, covers, supports, backgrounds; Arrangements to facilitate placing of the medium
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04Scanning arrangements
    • H04N2201/0402Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/043Viewing the scanned area
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04Scanning arrangements
    • H04N2201/0402Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0436Scanning a picture-bearing surface lying face up on a support

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Image Input (AREA)
  • Studio Devices (AREA)

Abstract

本实用新型提供一种按压板,能够抑制向露出了的读取介质照射光时的来自读取介质的反射光的扩散。按压板(1-1)在上置型扫描仪(1)中使用,该上置型扫描仪包括:对被载置到垂直方向下方的载置面(2)上的读取介质(S)进行拍摄的拍摄部(22)和向读取介质照射光的光源(21)。按压板(1-1)包括:从垂直方向上方按压读取介质的按压板主体(4)和在按压板主体的内部配置的多个防眩部(5)。按压板主体是透光的部件,防眩部遮挡来自读取介质的反射光中的、向相对于垂直轴(V)与来自光源的入射光(7)侧相反的一侧反射的反射光(9)。

The utility model provides a pressing plate capable of suppressing the diffusion of reflected light from a reading medium when the exposed reading medium is irradiated with light. The pressing plate (1-1) is used in an overhead scanner (1) that photographs a reading medium (S) placed on a vertically downward mounting surface (2) An imaging unit (22) and a light source (21) for irradiating light to a reading medium. The pressing plate (1-1) includes: a pressing plate main body (4) that presses a reading medium from above in the vertical direction, and a plurality of anti-glare portions (5) disposed inside the pressing plate main body. The main body of the pressing plate is a light-transmitting member, and the anti-glare part blocks the reflected light from the reading medium, which is reflected on the side opposite to the side of the incident light (7) from the light source with respect to the vertical axis (V) ( 9).

Description

Pressing plate
Technical field
The utility model relates to pressing plate.
Background technology
Now, read from vertical direction top that to carry the technology that reads medium of putting with the state that has exposed known.For example, in patent documentation 1, disclose the technology of reading device, this reading device comprises: read catoptrical reading mechanism from original copy, above original copy, have the compartment of terrain and keep the arm of reading mechanism and be used for the support portion of support arm.The reading device of having put down in writing patent documentation 1 is included in the lighting unit of the original copy that throws light on when image is imported.
< patent documentation 1>japanese kokai publication hei 08-181827 communique
The utility model content
(problem that utility model will solve)
If read the medium irradiates light to what exposed, the reverberation that then can worry to be read dieletric reflection makes user and the people who reads around the medium feel to dazzle the eyes.Hope to suppress catoptrical diffusion from reading medium.For example, if can suppress towards with catoptrical diffusion towards the different direction of the direction of the shoot part of image read-out, the people around then can suppressing to make feels the situation of dazzling the eyes.
Read exposed read medium the time, if concavo-convex and warpage etc. are arranged reading on the medium, the original image that then may cause reading is crooked, or because of the decline of inhomogeneous etc. the image quality of light quantity inhomogeneous generation tone.
The purpose of the utility model be to provide can be suppressed in the image read-out to exposed read the medium irradiates light time the technology from the catoptrical diffusion of reading medium.
Another purpose of the utility model be to provide can be suppressed in the image read-out to exposed read the medium irradiates light time from the catoptrical diffusion of reading medium, and can suppress to read exposed read medium the time the technology of decline of image quality.
(with the means of solve problem)
The pressing plate of the utility model; In the top loaded type scanner, use; This top loaded type scanner comprises: to by carry put carrying of vertical direction below put on the face read shoot part that medium takes and to the above-mentioned light source that reads the medium irradiates light; It is characterized in that this pressing plate comprises: push the above-mentioned pressing plate main body that reads medium from vertical direction top and in a plurality of anti-dazzle portion of the internal configurations of above-mentioned pressing plate main body; Above-mentioned pressing plate main body is the parts of printing opacity; Above-mentioned anti-dazzle block from the above-mentioned reverberation that reads medium, to being positioned at respect to vertical axis and reverberation from the opposite lateral reflection of the incident light side of above-mentioned light source.
In above-mentioned pressing plate, preferably, each above-mentioned anti-dazzle is configured in to connect to be positioned at and reads on locational above-mentioned shoot part and the resulting imaginary line of above-mentioned reading images what reading images was taken.
On above-mentioned pressing plate, preferably, above-mentioned shoot part is a line sensor of on main scanning direction, having arranged a plurality of pixels of reading images; Respectively with the direction of above-mentioned main scanning direction and above-mentioned imaginary line quadrature on above-mentioned anti-dazzle width smaller or equal to the width corresponding with the resolution of above-mentioned line sensor.
On above-mentioned pressing plate, preferably, in above-mentioned anti-dazzle, block from the above-mentioned reverberation that reads medium, be catoptrical reflecting surface to being positioned at catoptrical face from the opposite lateral reflection of the incident light side of above-mentioned light source with respect to vertical axis.
On above-mentioned pressing plate, preferably,, have at least one in first anti-dazzle that extends on the main scanning direction and on sub scanning direction, extend second anti-dazzle as above-mentioned anti-dazzle portion.
On above-mentioned pressing plate, preferably, above-mentioned pressing plate can be installed on the main body of above-mentioned top loaded type scanner.
On above-mentioned pressing plate, preferably, make by diffusion of the light of incident and reflection with the above-mentioned face that reads the opposite side of side medium.
(effect of utility model)
Pressing plate according to the utility model uses in the top loaded type scanner.Pressing plate comprises: push the pressing plate main body that reads medium from vertical direction top and in a plurality of anti-dazzle portion of the internal configurations of pressing plate main body.The pressing plate main body is the parts of printing opacity; Anti-dazzle block from the above-mentioned reverberation that reads medium, to being positioned at respect to vertical axis and reverberation from the opposite lateral reflection of the incident light side of above-mentioned light source.Thus, if use pressing plate, then has the effect that can suppress from the catoptrical diffusion of reading medium according to the utility model.
Description of drawings
Fig. 1 illustrates according to the image read-out of execution mode and the figure of pressing plate.
Fig. 2 is the stereogram that illustrates according to the image read-out of execution mode.
Fig. 3 illustrates to want portion's enlarged drawing according to the pressing plate of execution mode.
Fig. 4 is the figure that illustrates according to the pressing plate of the variation 1 of execution mode.
Fig. 5 is the figure that illustrates according to the image read-out of the variation 2 of execution mode.
Fig. 6 is the figure that illustrates according to the pressing plate of the variation 3 of execution mode.
(description of reference numerals)
1-1,1-2,1-3 pressing plate; 1 image read-out; Put face in 2 years; 4 pressing plate main bodys; 5 anti-dazzle portions; 7 light to the optical axis direction irradiation; 8 light to shoot part incident; 9: predetermined reverberation; 10 main bodys; 20 optical units; 21 light sources; 22 shoot parts; L reading object row; S reads medium; The V vertical axis; Thickness 101 sight lines that W is anti-dazzle; 102 vertical direction; 103 upsides; 104 downsides; Irradiation reflection on the 105 original copy faces; 106 sub scanning directions (depth direction); 107 front sides; The dark side in 108 footpaths; 201 sub scanning directions (depth direction); 202 front sides; The dark side in 203 footpaths; 204 main scanning directions (Width); 301 sub scanning directions (depth direction); 302 front sides; The dark side in 303 footpaths; 401 sight lines; 402 vertical direction; 403 upsides; 404 downsides; Irradiation reflection on the 405 original copy faces; 406 sub scanning directions (depth direction); 407 front sides; The dark side in 408 footpaths; 501 sight lines; 502 vertical direction; 503 upsides; 504 downsides; Irradiation reflection on the 505 original copy faces; 506 sub scanning directions (depth direction); 507 front sides; The dark side in 508 footpaths; 601 vertical direction; 602 upsides; 603 downsides; 604 central authorities; 605 main scanning directions (Width)
Embodiment
Below, specify pressing plate with reference to accompanying drawing according to the execution mode of the utility model.In addition, the utility model does not receive the restriction of this execution mode.In addition, the inscape in the following execution mode comprises that those skilled in the art can easily expect or identical in fact parts.
(execution mode)
Specify execution mode referring to figs. 1 through Fig. 3.This execution mode relates to the pressing plate that image read-out is used.Fig. 1 illustrates according to the image read-out of execution mode and the figure of pressing plate, and Fig. 2 is the stereogram that illustrates according to the image read-out of execution mode, and Fig. 3 illustrates to want portion's enlarged drawing according to the pressing plate of execution mode.Shown in Fig. 1 with the profile of rotating shaft X quadrature.
According to the image read-out (with reference to the Reference numeral 1 of Fig. 1) of this execution mode, read from the top of vertical direction with the state that has exposed in the interior space carry put read medium (with reference to the Reference numeral S of Fig. 1).In such image read-out, might shine and the reverberation that is read medium S reflection spreads towards periphery from light source (with reference to the Reference numeral 21 of Fig. 1), user is waited feel to dazzle the eyes.
The pressing plate of this execution mode (with reference to the Reference numeral 1-1 of Fig. 1) has and blocks catoptrical anti-dazzle (with reference to the Reference numeral 5 of Fig. 1) that will spread.Block for anti-dazzle 5 to respect to vertical axis V and reverberation (with reference to the Reference numeral 9 of Fig. 1) from incident light (with reference to the Reference numeral 7 of Fig. 1) lateral reflection that side is opposite of light source 21.Thus, the pressing plate 1-1 of this execution mode can suppress from the catoptrical diffusion of reading medium S, suppresses user and waits and feel the situation of dazzling the eyes.
Image read-out 1 illustrated in figures 1 and 2 is put (overhead) type scanner on being.That kind shown in the image pattern 1, image read-out 1 have main body 10 and optical unit 20.Image read-out 1 can read in the carrying of vertical direction below of optical unit 20 and put face 2 and upload the image of putting that reads medium S.Carry and to put the plane that face 2 is upper surfaces etc. of for example desk.In this execution mode, be that example describes when putting image read-out in 1 year on the face identical, but be not subject to this with carrying the face of putting 2.Carrying the position put image read-out 1 also can read carrying of medium S to put face 2 different with carrying to put.As an example, image read-out 1 also can comprise to have to carry to be put carrying of face 2 and puts platform.
Main body 10 has pedestal portion 11, column sections 12 and cap 13.Pedestal portion 11 is carried to put to carry to put on face 2 grades supports entire body 10, is the base portion of main body 10.The functional unit that the mains switch of image read-out 1, image read beginning switch etc. is disposed at for example pedestal portion 11.Pedestal portion 11 forms for example flat pattern, is arranged to its lower surface and carries that to put face 2 mutually opposed.The pedestal portion 11 of this execution mode has flat cuboid or identical with it or similar shape, and the length of vertical direction is all littler than the length of the length of Width (main scanning direction of afterwards stating) and depth direction (sub scanning direction of afterwards stating).In addition, the length of the Width in the pedestal portion 11 also can be bigger than the length of depth direction.
Read medium S and carry that to be set to 1 face that the one side of reading medium S is headed in 4 faces of side of pedestal portion 11 be front 11a.That is, reading medium S carries to put carrying and puts on the face 2 so that parallel with front 11a on one side.In this manual, one side carry be set to rectangle read medium S head on front 11a the time, one side be recited as " Width " with the parallel direction of the front 11a side that reads medium S.In addition, being recited as " depth direction " with the parallel direction in limit of one side quadrature of the front 11a side that reads medium S.That is, " depth direction " is the user across reading medium S and image read-out 1 direction that user and image read-out 1 are faced mutually when mutually opposed.On depth direction, across reading under medium S and the image read-out 1 opposed state, be recited as " front side " to a side the user near the user, call a side " the dark side in footpath " away from the user.
Column sections 12 is connected with pedestal portion 11, extends to the vertical direction top from pedestal portion 11.Column sections 12 forms the for example column or the cigarette fontanel shape of section rectangle.The bottom of column sections 12 forms along with extending the taper that the area of section enlarges to the vertical direction downside.Column sections 12 is connected with an avris of the upper surface of pedestal portion 11.Specifically, in 4 limits at column sections 12 and the edge of the upper surface that forms pedestal portion 11, be connected with an avris that disposes a side opposition side that reads medium S.In other words, column sections 12 is connected with the end away from the dark side in footpath that reads medium S in the pedestal portion 11.In addition, column sections 12 is connected with the central portion of the Width of pedestal portion 11.
Cap 13 is support optical units 20 revolvably, also can receive and keep optical unit 20 in inside.Cap 13 covers optical unit 20 from the vertical direction top.Cap 13 for example can have the recess that forms at lower surface, receives and keeps optical unit 20 in this recess.Cap 13 is connected with the end of the vertical direction upside of column sections 12.Cap 13 is from column sections 12 two side-prominent to the front of depth direction side and Width.That is, cap 13 is put a side that reads medium S and stretches out to carrying from column sections 12, and stretches out to the both sides of Width from column sections 12.
In image read-out 1, pedestal portion 11 is opposed each other in vertical direction with cap 13, is connected with each other the end of reading medium S side and opposition side of the depth direction of the two with column sections 12.In addition, cap 13 also stretches out to the front of depth direction side from pedestal portion 11.That is, put face 2 and upload the pedestal portion 11 that heads on that is set to carrying if read medium S, then to read medium S opposed each other in vertical direction with this at least a portion of cap 13.
Optical unit 20 can rotate around rotating shaft X with respect to main body 10.Rotating shaft X extends on Width.That is, rotating shaft X is parallel with front 11a.Optical unit 20 can be around rotating shaft X partes tegmentalis 13 supports rotatably.In addition, in cap 13, dispose not shown drive division.Drive division makes optical unit 20 rotate around rotating shaft X.Drive division, for example, the gear part that has the electrodynamic type motor and couple together the rotating shaft of motor and optical unit 20.Motor is a stepping motors for example, can precision controls the anglec of rotation of optical unit 20 well.In addition, gear part for example by the constituting of a plurality of gears, makes the rotational delay of motor and is delivered to optical unit 20.
Optical unit 20 comprises light source 21 and shoot part 22.Light source 21 has the illuminating part of LED etc., can read medium S irradiates light from direction on the vertical direction.Light source 21 also can be for example on straight line, to dispose the light source that a plurality of LED form along main scanning direction.Image on the reading object row L of light source 21 in reading medium S is the reading images irradiates light.Shoot part 22 is the imageing sensors that for example have CCD (charge coupled device), can take carry put face 2 upload put read medium S.Specifically, shoot part 22 converts electronic data being read the reading images reflection on the capable L of object to the reverberation of shoot part 22 incidents through opto-electronic conversion, generates the view data of reading images.
With the radial direction of rotating shaft X quadrature on, light source 21 is configured in the outside of shoot part 22.The optical axis of light source 21 is the directions with rotating shaft X quadrature.In addition, on the direction of principal axis view of rotating shaft X, the optical axis of the optical axis of shoot part 22 and light source 21 is on same axle.That is, on the direction of principal axis view of rotating shaft X, incide shoot part 22 with light on the direction of rotating shaft X quadrature, this incident light forms images on the light receiving surface of shoot part 22 via lens.
Shoot part 22 is line sensors of on main scanning direction, having arranged a plurality of pixels of reading images.Under the main scanning direction state parallel, be configured in shoot part 22 on the optical unit 20 with rotating shaft X.Each pixel receives the light of the reading images that on light receiving surface, forms images via lens, exports the electric signal corresponding with the light that receives.Shoot part 22 can read the image on the reading object row L of medium S, generates the capable view data of main scanning direction.In addition, the line number of the line sensor of shoot part 22 both can be that single file also can be a multirow.
Image read-out 1 can be obtained the image of the reading object row L of the optional position of reading the sub scanning direction on the medium S through regulating the position of rotation around rotating shaft X of optical unit 20.Image read-out 1 can be obtained the whole view data that reads medium S through going the position adjustment that obtains and utilize the reading object row L that carries out rotary optical unit 20 of view data repeatedly.That is, the irradiates light of image read-out 1 through making light source 21 be along sub scanning direction scan manuscript face, and read the image of the reading object row L of illuminated light by shoot part 22, generates the image that reads medium S.Image read-out 1 for example through dark side direction front side moves the position of reading object row L successively from the footpath of depth direction, Yi Bian read the capable image of each reading object row L, generates the two-dimensional image data that reads medium S on one side.
Image read-out 1 can be connected with the external mechanical of PC etc.Image read-out 1 can be controlled by external mechanical, and has the function of the view data that generates to external mechanical output.In addition, image read-out 1 can not be connected with external mechanical and work independently yet.Image read-out 1 also can have the storage device of preserving the view data that generates.
At this, with image read-out 1 read exposed read medium S the time, read when concavo-convex and warpage etc. are arranged on the medium S at this, the original image that then may cause reading is crooked, or because of the tone of the inhomogeneous generation original image of light quantity inhomogeneous.In image read-out 1 according to this execution mode, carrying and to put under the state that has exposed on the face 2 reading medium S, read the image of medium S.That is, the light that reads medium S radiation source 21 that 1 pair of image read-out has exposed reads the image of medium S with the reverberation from reading medium S that incides shoot part 22.Therefore, read when concavo-convex and warpage etc. are arranged on the medium S, the decline of quality then may take place when image reads at this.
Reference numeral 1-1 is a pressing plate used in the image read-out 1.Pressing plate 1-1 pushes the flat pressing component that reads medium S from the vertical direction top.Pressing plate 1-1 reads medium S through oppressing from the top, and the concavo-convex and warpage that reads medium S in the time of can suppressing to read improves the flatness that reads medium S.Therefore, the bending in the original image that pressing plate 1-1 can suppress to read, distortion, the tone that causes because of light quantity is inhomogeneous are inhomogeneous etc., can improve the quality and the precision of the view data that image read-out 1 generates.In addition, pressing plate 1-1 is through reading medium S from top compressing, can put face 2 and fixedly reads medium S with respect to carrying.Therefore, the user need not pin with hand and read medium S and prevent to read medium S and move, so the operability of image read-out 1 improves.
Pressing plate 1-1 compressing is read the scheme of medium S and is for example utilized the deadweight of pressing plate 1-1, and can be to push pressing plate 1-1 by the user to the vertical direction below.Also can for example on the two ends of the pressing plate 1-1 on the main scanning direction, handle be set.Under the situation, the user is grabbing this handle and is pushing pressing plate 1-1 to reading medium S when the warpage that reads medium S is severe etc.As long as handle is outstanding to the outside of main scanning direction with respect to pressing plate 1-1.If like this, then can make handle be positioned at the outside in the reading object zone of image read-out 1.
Pressing plate 1-1 has plane original copy oppression department 3.Original copy oppression department 3 is faces of rectangle for example, is clipped in original copy oppression department 3 and carries and put between the face 2 reading medium S, pushes the reading object portion that reads medium S from the vertical direction top.For example, when to read medium S be laminar, original copy oppression department 3 was pushed the reading object face that reads medium S from the vertical direction top.In addition, reading the original copy that medium S is books, magazine, bookbinding, traditional thread binding original copy etc., and the reading object of image read-out 1 is when reading the opening page of medium S, two pages of being opened from the compressing of vertical direction top of original copy oppression department 3.Thus, the page that pressing plate 1-1 can suppress reading object upwarps, bending etc., improves the quality and the precision of the view data that image read-out 1 generates.
Pressing plate 1-1 can be formed by the transparent material that for example glass or acrylic etc. see through visible light.As the material of pressing plate 1-1, as long as use the material that can see through the visible light at least from the light of light source 21 irradiations, just can not hinder 22 pairs of shoot parts reads reading of medium S, can push and read medium S.For example, without pressing plate 1-1 but the user push when reading medium S with hand, user's hand may get into the reading object zone and the part that is used as original copy reads.Different therewith, the pressing plate 1-1 of this execution mode is owing to be printing opacity, reads medium S so push with can not producing the substantial influence that mirrors original image etc.The size of pressing plate 1-1 is preferred bigger than the size that reads medium S of the maximum that can read.Like this, just can oppress whole that reads medium S by enough pressing plate 1-1.
At this, the image read-out that is used as the top loaded type scanner 1 read by carry put carry put on the face 2 read medium S the time owing to read the irradiation reflection on the medium S, possible user can feel to dazzle the eyes.From light source 21 to reading medium S irradiation and being read the light of oriented user's direction of visual lines reflection the reverberation of medium S reflection.The user is placed on to carry and puts on the face 2 and when reading with image read-out 1 reading medium S; If it is mutually opposed with image read-out 1 across reading medium S; Then during reading the reading of medium S, can feel constantly to dazzle the eyes because of light to user's direction reflection.
Like this, to exposed read medium S irradiates light and when reading the image of medium S, with different when reading medium S irradiates light in the inner space of image read-out as prior art, irradiates light is exposed to the outside.Therefore, the user can feel that reverberation dazzles the eyes, and may damage the comfortableness of operation.In addition, reverberation possibly make the people who reads around the medium S feel to dazzle the eyes.Hope to suppress to read the catoptrical diffusion that medium S causes, suppress to make user and people on every side feel to dazzle the eyes.
The pressing plate 1-1 of this execution mode has a plurality of anti-dazzle 5 in internal configurations.Anti-dazzle 5 is for example tabular or membranaceous.Anti-dazzle 5 inside that is configured in pressing plate 1-1, the direction of a parallel sided among edge and the pressing plate 1-1 is extended.Form by the intransitable material of visible light for anti-dazzle 5.Block for anti-dazzle 5 from the reverberation that reads medium S, to respect to vertical axis V with from the reverberation 9 of the opposite lateral reflection of the incident light side of light source 21.In other words, anti-dazzle 5 is to block from reading medium S to the light-blocking member of user side to the reverberation 9 of reflection.Through the reverberation 9 that suppresses to a lateral reflection opposite with light source 21 sides with anti-dazzle 5, can suppress the user and feel the situation of dazzling the eyes with respect to vertical axis V.
Anti-dazzle 5 inside that is configured in pressing plate main body 4.Pressing plate main body 4 is main parts of pressing plate 1-1, is formed by the material that can see through visible light at least.Pressing plate 1-1 both can be that pressing plate main body 4 is shaped with anti-dazzle 5 integratedly, also can constituting by a plurality of component parts.When also can be for example forming pressing plate main body 4 making sclerosis such as resin, pressing plate 1-1, pressing plate main body 4 is shaped integratedly with anti-dazzle 5 in advance each anti-dazzle 5 of internal configurations.Perhaps, pressing plate 1-1 also can constitute pressing plate main body 4 by a plurality of component parts, between adjacent component parts, clips anti-dazzle 5 and wait formation through bonding.At this moment, also can form anti-dazzle 5 through on the faying face of component parts, applying.
On pressing plate main body 4, be formed with original copy oppression department 3.More specifically, the pressing plate main body 4 of this execution mode is the plate-shaped member of rectangle or the parts of flat cuboid, and the face of a side of its thickness direction is an original copy oppression department 3.Pressing plate main body 4 is utilized original copy oppression department 3 to push from the vertical direction top and is read medium S.
That kind shown in the image pattern 1, pressing plate 1-1 is so that anti-dazzle 5 bearing of trend becomes the mode of main scanning direction carries to put and reading on the medium S.In following explanation, carrying the state of putting pressing plate 1-1 with the mode that becomes main scanning direction at anti-dazzle 5 bearing of trend is prerequisite, and 1-1 describes to pressing plate.
Each anti-dazzle 5 in state spaced apart from each other lower edge sub scanning direction separates predetermined space ground configuration.That is, one anti-dazzle 5 and adjacent with it anti-dazzle 5 is configured on sub scanning direction, separate predetermined space.Be configured to for anti-dazzle 5, the upper surface 6 of pressing plate main body 4 is that original copy oppression department 3 is connected with the lower surface of pressing plate main body 4.That is, anti-dazzle 5 upper end is positioned at the top of pressing plate main body 4, and anti-dazzle 5 lower end is positioned at the bottom of pressing plate main body 4.In addition, anti-dazzle 5 also can be, on the direction of principal axis view of rotating shaft X, is linearity, and does not have bending with respect to the straight line that connects anti-dazzle 5 top and bottom.
Each anti-dazzle 5 is distolaterally extended to another distolateral linearity ground from one of main scanning direction in pressing plate main body 4.For example, anti-dazzle 5 is configured to, and is connected an end face of the main scanning direction of pressing plate main body 4 with the other end.
Anti-dazzle 5 inside pressing plate main body 4 is divided into zone and the zone of front side of the dark side in footpath of sub scanning direction.Thus, utilize anti-dazzle 5 reverberation 9 of side that blocks from the reverberation that is read medium S reflection towards the front of sub scanning direction.In addition, anti-dazzle 5 of this execution mode along with extending from the lower direction of vertical direction top to the dark tilt in the footpath of sub scanning direction.Thus, more effectively utilize anti-dazzle 5 and block and be read the reverberation 9 of medium S to the front of sub scanning direction lateral reflection.In addition, also can be anti-dazzle 5 that tilts in this wise be limited to the front side that on sub scanning direction, is positioned at rotating shaft X anti-dazzle 5.That is, also can not, to the dark tilt in the footpath of sub scanning direction along with extending from the lower direction top of vertical direction for anti-dazzle 5 of the dark side in footpath of the sub scanning direction that is positioned at rotating shaft X.
In addition, with from light source 21 to anti-dazzle 5 of the consistent angle configurations of the incidence angle of the light that reads medium S incident.On the direction of principal axis view of rotating shaft X, anti-dazzle 5 with respect to the inclination angle theta of vertical axis V with identical to the incidence angle α of the light that reads medium S incident from light source 21.Vertical axis V is with to carry the normal put face 2 corresponding.At this, incidence angle α is the incidence angle to the light 7 of the optical axis direction of light source 21 irradiation, the line that expression connects light source 21 and reading object row L with read the angle that medium S is become.In this execution mode, advance on imaginary line L1 to the light 7 of optical axis direction irradiation, this imaginary line L1 be the edge with the direction of the pivot quadrature of rotating shaft X with the pivot of rotating shaft X with read the line that medium S couples together.
The position of rotation of incidence angle α and optical unit 20 changes accordingly.Thus, anti-dazzle 5 inclination angle theta forms different angles accordingly with the position of sub scanning direction.Anti-dazzle 5 the inclination angle theta that is positioned at the front side of sub scanning direction is than anti-dazzle 5 the big angle of inclination angle theta that is positioned at the dark side in footpath.Tilt with the inclination angle theta corresponding through making anti-dazzle 5, suppressed to cover for anti-dazzle 5 light from light source 21 to reading medium S with incidence angle α.That is, suppressed in the situation that reads on the reading object row L of medium S the shadow that forms anti-dazzle 5.Thus, suppressed in pressing plate main body 4 configuration anti-dazzle 5 and the reduction of reading precision that causes.
In addition, be read medium S reflection and to anti-dazzle 5 of the consistent angle configurations of the angle of reflection of the light 8 of shoot part 22 incidents.On the direction of principal axis view of rotating shaft X, anti-dazzle 5 inclination angle theta be read medium S reflection and identical to the angle of reflection β of the light 8 of shoot part 22 incidents.In other words, being configured in connection to each anti-dazzle 5 is positioned on the imaginary line L1 that reads locational shoot part 22 and reading images that reading images is taken.That is, being configured in connection to each anti-dazzle 5 is positioned on the imaginary line L1 that reads locational shoot part 22 and reading object row L that reading object row L is taken.
In this execution mode, be configured in light source 21 and shoot part 22 on the identical position of rotation of rotating shaft X.That is, on the direction of principal axis view of rotating shaft X, the optical axis direction of light source 21 is identical with the optical axis direction of shoot part 22.In other words, to the irradiation of the optical axis direction of light source 21 and to the incidence angle α of the light 7 that reads medium S incident be read that medium S reflects and equate to the angle of reflection β of the light 8 of shoot part 22 incidents.Therefore, anti-dazzle 5 the inclination angle theta of this execution mode be can suppress to from light source 21 to optical axis direction irradiation and to light that reads medium S incident 7 and the angle that is read medium S reflection and any situation of blocking to the light 8 of shoot part 22 incidents.
In addition, as explaining with reference to Fig. 3, anti-dazzle 5 thickness is can be suppressed to reflect in the image that is generated by image read-out 1 to write anti-dazzle 5 size.Fig. 3 be Fig. 1 want portion's enlarged drawing.At this, anti-dazzle 5 thickness W representes respectively anti-dazzle 5 width on the direction (the Reference numeral Y with reference to Fig. 3 below is also referred to as " predetermined direction ") with main scanning direction and imaginary line L1 quadrature.Anti-dazzle 5 thickness W be along in anti-dazzle 5 section shape of the light 8 of shoot part 22 incidents, in the part of the side end on the predetermined direction and the distance of the predetermined direction between the part of the opposite side end.
Anti-dazzle 5 thickness W smaller or equal to the corresponding width of resolution as the shoot part 22 of line sensor.At this, the resolution of shoot part 22 is optical resolutions for example.In addition; The width corresponding with resolution both can be the width with the corresponding predetermined direction of shoot part 22 discernmible minimum spacings (pitch); It also can be the width of the predetermined direction of the reading images corresponding with the width of a pixel of shoot part 22; It also can be width to the predetermined direction of the light 8 of shoot part 22 incidents; Also can be the width of conduct to the predetermined direction of the light that on the light receiving surface of shoot part 22, forms images of the light 8 of shoot part 22 incidents; Also can be the width of the predetermined direction that read a point (dot) medium S on corresponding with resolution, also can be the width through the predetermined direction that once reads the reading images that obtains of row view data.For example, when the optical resolution of shoot part 22 was 300dpi, anti-dazzle 5 thickness W can be for below the 0.085mm.
Through making anti-dazzle 5 thickness W is below the width corresponding with the resolution of shoot part 22, can be suppressed to reflect in the image that is read by image read-out 1 to write anti-dazzle 5.See that from the viewpoint that mirrors that suppresses anti-dazzle 5 anti-dazzle 5 thickness W is more little good more.For example, anti-dazzle 5 thickness W also can be below 1/2 or less than 1/2 of the width corresponding with the resolution of shoot part 22.
In addition, anti-dazzle 5 is dropped under the prerequisite in the permissible value at thickness W, also can be with respect to tilting to the light 7 of optical axis direction irradiation or to the light 8 of shoot part 22 incidents.
In anti-dazzle 5, be catoptrical reflecting surface towards face (being designated hereinafter simply as " dark side, the footpath ") 5a of the dark side in footpath of sub scanning direction.The dark side 5a in footpath be block from the reverberation that reads medium S, to respect to vertical axis V and face from the reverberation 9 (with reference to Fig. 1) of incident light (to the light of the optical axis direction irradiation) lateral reflection that 7 sides are opposite of light source 21.In other words, the dark side 5a in footpath blocks to reverberation 9 that reflects at the rightabout of sub scanning direction across vertical axis V and incident light 7 sides and the reflecting surface that reflects this reverberation 9.In following explanation, also calling " predetermined reverberation " to reverberation 9 across vertical axis V and the rightabout reflection of incident light 7 sides on sub scanning direction.
At least a portion of the predetermined reverberation 9 of the dark side 5a reflection in quilt footpath is to reading object row L incident.That is, return once more to the light of external world reflection and read medium S from reading medium S.Thus, the light summation to reading object row L irradiation increases.Its result is reflected and increases to the light quantity of the light 8 of shoot part 22 incidents at reading object row L.Therefore, though be not provided with anti-dazzle and compared in 5 o'clock when the light quantity of light source 21 irradiations has reduced, also can fully guarantee to shoot part 22 quantity of incident light.Its result can reduce the light quantity of light source 21 irradiations when guaranteeing the light quantity of the incident light of shoot part 22.Thus, can reduce from reading the catoptrical light quantity that medium S spreads towards periphery and suppress the user and feel the situation of dazzling the eyes.
The dark side 5a in footpath both can be the face that all reflects visible light, also can be the face of at least a portion of visible light reflection.The dark side 5a of critical path just can increase the light summation that shines to reading object row L at least a portion of predetermined reverberation 9 reflection.
The dark side 5a in footpath is preferably as the high face of catoptrical reflector plate efficient.The dark side 5a in footpath also can be made up of for example reflectivity high coating or material.In addition, the dark side 5a in footpath also can be the high surface configuration of reflectivity, for example is the good face of smoothness.
The dark side 5a in footpath also can have at least a in recess or the protuberance.For example, the dark side 5a in footpath also can be through having recess the optical convergence of reflection to reading on the medium S.Perhaps, the dark side 5a in footpath also can be through having protuberance easily from the following lateral reflection of the reverberation that reads medium S to vertical direction.In addition, when recess or protuberance are set, both can only make the dark side 5a in footpath crooked, and also can make whole anti-dazzle 5 bending form recess or protuberance.
From reducing user's the angle of dazzling the eyes sense, preferably, in anti-dazzle 5 with face dark side, footpath 5a opposition side, be the face of the front side of sub scanning direction, the reflection of light towards the user is suppressed.The face of above-mentioned front side through for example being made as the face that makes light diffusion or saturate etc., makes light be difficult to the direction reflection to the user.
Can suitably set a plurality of anti-dazzle 5 density of configuration.For example, from suppress to the user side to the light of reflection, improve the angle of anti-dazzle property, preferably dispose anti-dazzle 5 densely.On the other hand, from be suppressed at original image, mirror anti-dazzle 5 angle, preferably sparsely dispose anti-dazzle 5.
Also can suppose for example user's sight line position in advance, be specified to anti-dazzle 5 configuration and can cover the reverberation of retaining at least to this hypothesis sight line position reflection.Suppose the sight line position, for example can be set at respect to relative altitude position of carrying the sight line of putting face 2 or the sight line position on the depth direction.If describe, then confirm the size in anti-dazzle 5 adjacent gap, can block the reverberation 9a in the predetermined reverberation 9 to the direction reflection of supposing the sight line position with reference to Fig. 1.At this moment, as long as be configured to, can block in predetermined reverberation 9 angle of reflection to each anti-dazzle 5 with identical to the angle of reflection γ of the reverberation 9a of the direction reflection of hypothesis sight line position or angle of reflection is just more passable than its big predetermined reverberation 9.
The processing that also can spread at the upper surface 6 enterprising enforcement light of pressing plate 1-1 is so that can suppress the strong catoptrical generation on the upper surface 6.Also can be for example make filming of light diffusion, apply the processing that the coating material that makes the light diffusion etc. reduces dazzle through on the surface of upper surface 6, forming fine gauffer or concaveconvex shape, attaching.Through upper surface 6 being made the processing of light diffusion, suppress the strong catoptrical generation of certain orientation (for example normal reflection direction).To the processing of upper surface 6, for example also can be to make that the degree that 6 pairs of light of upper surface spread is higher than the degree that 3 pairs of light of original copy oppression department spread at least.
Preferably, pressing plate 1-1 reads in compressing under whole the state of medium S, makes the limit of the front side of sub scanning direction be positioned at the such size of front side that reads medium S.Like this, can in pressing plate 1-1, dispose predetermined catoptrical anti-dazzle 51 that to block when the front side end on the sub scanning direction of medium S is read in light source 21 irradiation.
In addition, in this execution mode, shoot part 22 is configured on the direction of principal axis view of rotating shaft X the light shaft coaxle with light source 21, but the relative position of shoot part 22 and light source 21 is not limited to this.For example, also can be different to the direction of the light 7 of the optical axis direction of light source 21 irradiation and direction to the light 8 of shoot part 22 incidents.At this moment, anti-dazzle 5 inclination angle theta can be made as to the incidence angle α of the light 7 of the optical axis direction of light source 21 irradiation and be read medium S reflection and angle between the angle of reflection β of the light 8 of shoot part 22 incidents, the angle in the middle of for example.
(variation 1 of execution mode)
The variation 1 of execution mode is described below.Pressing plate can be installed to main body 10, perhaps also can be supported by main body 10.Fig. 4 is the figure that illustrates according to the pressing plate 1-2 of this variation.Pressing plate 1-2 has axial region 31.Axial region 31 extends on main scanning direction, is that section is circular bar-like member.Pressing plate 1-2 has the dark side-prominent protuberance 32 of dark side end radius vector from the footpath of sub scanning direction.Axial region 31 is connected with this protuberance 32.Axial region 31 can be as the supported portion that is supported by main body 10.
The pedestal portion 11 of main body 10 has the support portion of supporting axial region 31.The support portion for example can be, through confirm the parts with respect to the relative position of the vertical direction of the axial region 31 of pedestal portion 11 from the supported underneath axial region of vertical direction 31.The support portion of this moment also can be the acceptance division that is shaped as the U word shape on the direction of principal axis view of rotating shaft X.Like this, axial region 31 relatively moving with respect to the sub scanning direction of pedestal portion 11 can be limited in the support portion.In addition, pressing plate 1-2 can be the parts that can install and take off with respect to main body 10.
In addition, the support portion also can be the bearing portion that keeps axial region 31 revolvably.For example, the support portion, through combining to be held in axial region 31, restriction axial region 31 moves to radial direction, and axial region 31 can freely rotate.The user can be that pivot makes pressing plate 1-2 rotation with axial region 31 shown in arrow Y1.The user is through making pressing plate 1-2 rotation, can push the state that reads medium S and pressing plate 1-2 at pressing plate 1-2 and not push between the state that reads medium S and switch.
Pressing plate 1-2 can use under the state that always is installed on the main body 10, also can be the mode that on main body 10, can load and unload.In addition, pressing plate 1-2 also can fold.For example, pressing plate 1-2 also can be in the central portion doubling of sub scanning direction.If pressing plate 1-2 can fold, then carry to put to carry and put on the face 2 or little, so pressing plate 1-2 picks and places easily from the operating space of carrying when putting face 2 and taking off reading medium S.In addition, when harvesting image read-out 1 grade,, can realize the compactization of image read-out 1 through folding pressing plate 1-2.
Also can be with respect to the fixing pressing plate 1-2 of main body 10, float at pressing plate 1-2 under the state of hollow and support pressing plate 1-2 by main body 10.For example, when reading the opening page of books, upload the pressing plate 1-2 that puts and to tilt opening page or leaf.If pressing plate 1-2 tilts, then may between anti-dazzle 5 inclination angle theta and incidence angle α, depart from, perhaps depart from anti-dazzle 5 inclination angle theta and between the angle of reflection β of the light 8 of shoot part 22 incidents.Different therewith, put face 2 and support pressing plate 1-2 abreast with carrying if float at pressing plate 1-2 under the state of hollow by main body 10, then can keep anti-dazzle 5 inclination angle theta suitably.
In addition, while main body 10 has keeps pressing plate 1-2 and carry that the face of putting is 2 parallel, the mobile guidance part of the vertical direction that allows pressing plate 1-2.Like this, though push books etc. open about two pages the time, also can keep pressing plate 1-2 and carry that to put face 2 parallel.
(variation 2 of execution mode)
The variation 2 of execution mode is described below.The light source 21 and the shoot part 22 of above-mentioned execution mode is accompanied by being rotated in of optical unit 20 and reads upward scanning of medium S, but is not limited in this.For example, light source 21 also can be to the whole medium S irradiates light that reads under the state that is fixed.Fig. 5 is the figure that illustrates according to the image read-out 1 of this variation.In image read-out 1, light source 21 is configured on the cap 13 with optical unit 20 independently, and light source 21 is to the whole medium S irradiates light that reads.Light source 21 is fixed with respect to cap 13, in certain position to reading medium S irradiates light.Shoot part 22, with above-mentioned execution mode likewise, be configured on the optical unit 20, rotate around rotating shaft X.
For such image read-out 1 also be, anti-dazzle 5 of pressing plate 1-1 block from the reverberation that reads medium S, to respect to vertical axis V and reverberation from the opposite lateral reflection of incident light 17 sides of light source 21.Incident light 17 is to the light that reads the each several part incident on the medium S from the light source 21 that is fixed.
Being configured in for example connection to each anti-dazzle 5 is positioned on the imaginary line L1 that reads locational shoot part 22 and reading images that reading images is taken.In other words, anti-dazzle 5 inclination angle theta be read medium S reflection and identical to the angle of reflection β of the light 8 of shoot part 22 incidents.In addition, each anti-dazzle 5 edge is from the direct of travel configuration of light source 21 to the light 17 that reads the each several part incident on the medium S.That is, anti-dazzle 5 inclination angle theta be with from light source 21 to the corresponding angle of the incidence angle δ of the incident light 17 that reads medium S incident.Thus, suppressed respectively to block to block to the light 7 that reads medium S incident with by anti-dazzle 5 to be read medium S reflection and to the light 8 of shoot part 22 incidents from light source 21 by anti-dazzle 5.
In addition, shoot part 22 also can be under the state that is fixed, to read the regional imaging transducer that medium S takes to whole.Also be this moment, as long as based on being read medium S reflection and setting anti-dazzle 5 inclination angle theta to the angle of reflection β of the light 8 of shoot part 22 incidents, just can suppress to block by anti-dazzle 5 and be read that medium S reflects and to the light 8 of shoot part 22 incidents.
(variation 3 of execution mode)
The variation 3 of execution mode is described below.Different with anti-dazzle 5 of above-mentioned execution mode, anti-dazzle 15 of this variation is extended on sub scanning direction.In following explanation, be also referred to as " first anti-dazzle 5 " on main scanning direction, extend anti-dazzle 5 of above-mentioned execution mode, be also referred to as " second anti-dazzle 15 " on sub scanning direction, extend anti-dazzle 15 of this variation.Can suppress situation about on main scanning direction, spreading for second anti-dazzle 15 from the reverberation that reads medium S.Fig. 6 is the figure that illustrates according to the pressing plate 1-3 of this variation.Among Fig. 6, different with Fig. 1, the pressing plate 1-3 that looks sideways from the front of depth direction is shown.Position on the main scanning direction of light source 21 and shoot part 22 is the central portion of image read-out 1.The central authorities that pressing plate 1-3 is configured to main scanning direction are central corresponding with light source 21 and shoot part 22.The light of light source 21 irradiations is along with extending to the vertical direction downside and on main scanning direction, spreading.
Second anti-dazzle 15 bearing of trend is that the direction with first anti-dazzle 5 of above-mentioned execution mode direction quadrature that extends is a sub scanning direction.Each second anti-dazzle 15 block from the reverberation that reads medium S, to respect to vertical axis V with from the reverberation 29 of the opposite lateral reflection of incident light 27 sides of light source 21.Thus, can suppress situation about on main scanning direction, spreading from the reverberation that reads medium S.For example, can suppress on the normal reflection direction, to spread from the light that reads medium S.Thus, even, also can suppressing this people in the side of image read-out 1, the people feels the situation of dazzling the eyes.
Second anti-dazzle 15 along with extending and tilt towards the center side of the Width of pressing plate 1-3 to upside from the downside of vertical direction.Second anti-dazzle 15 with along being read medium S reflection and tilting to the mode of the light 28 of shoot part 22 incidents.For example, second anti-dazzle 15 inclination angle is identical with the angle of reflection that reads on the medium S to the light 28 of shoot part 22 incidents.Thus, suppressed second anti-dazzle 15 situation about being mirrored in the image that reads in by shoot part 22.
In addition, second anti-dazzle 15 with along tilting from the mode of light source 21 to the light 27 of the each several part incident of reading object row L.For example, second anti-dazzle 15 inclination angle is identical with incidence angle to the light 27 of the each several part incident of reading object row L.Thus, suppressed to block from light source 21 to the light that reads medium S incident for second anti-dazzle 15.In second anti-dazzle 15, also can be catoptrical reflecting surface towards face (being designated hereinafter simply as " central the side ") 15a of the center side of main scanning direction.The side 15a of central authorities be block from the reverberation that reads medium S, to respect to vertical axis V and face from the reverberation of the opposite lateral reflection of incident light 27 sides of light source 21 (predetermined reverberation) 29.
In addition, also can in pressing plate 1-3, dispose first anti-dazzle 5 and second anti-dazzle 15 the two.Like this, can suppress respectively from the diffusion of the catoptrical sub scanning direction that reads medium S and the diffusion of main scanning direction.
Disclosed content can be implemented on appropriate combination ground in above-mentioned execution mode and the variation.

Claims (7)

1.一种按压板,在上置型扫描仪中使用,该上置型扫描仪包括:对被载置到垂直方向下方的载置面上的读取介质进行拍摄的拍摄部、和向上述读取介质照射光的光源,其特征在于,该按压板包括: 1. A pressing plate used in an overhead scanner comprising: an imaging unit for imaging a reading medium placed on a vertically lower mounting surface; The light source for medium irradiating light is characterized in that the pressing plate includes: 从垂直方向上方按压上述读取介质的按压板主体,和 A pressing plate main body that presses the above-mentioned read medium from above in the vertical direction, and 配置在上述按压板主体的内部的多个防眩部; A plurality of anti-glare parts disposed inside the pressing plate main body; 上述按压板主体是透光的部件; The main body of the pressing plate is a light-transmitting component; 上述防眩部遮挡来自上述读取介质的反射光中的、向相对于垂直轴与来自上述光源的入射光侧相反的一侧反射的反射光。 The anti-glare portion blocks reflected light reflected on a side opposite to a side of incident light from the light source with respect to a vertical axis, among reflected light from the reading medium. 2.如权利要求1所述的按压板,其特征在于: 2. The pressing plate according to claim 1, characterized in that: 各上述防眩部配置在连接位于对读取图像进行拍摄的读取位置上的上述拍摄部和上述读取图像的假想线上。 Each of the anti-glare units is disposed on a virtual line connecting the imaging unit located at a reading position for imaging the read image and the read image. 3.如权利要求2所述的按压板,其特征在于: 3. The pressing plate according to claim 2, characterized in that: 上述拍摄部是读取图像的多个像素排列在主扫描方向上的线传感器; The imaging unit is a line sensor in which a plurality of pixels of the read image are arranged in the main scanning direction; 在分别与上述主扫描方向和上述假想线正交的方向上的上述防眩部的宽度小于等于与上述线传感器的分辨率对应的宽度。 A width of the anti-glare portion in directions perpendicular to the main scanning direction and the virtual line is equal to or less than a width corresponding to the resolution of the line sensor. 4.如权利要求1~3中任一项所述的按压板,其特征在于: 4. The pressing plate according to any one of claims 1 to 3, characterized in that: 在上述防眩部中,遮挡来自上述读取介质的反射光中的、向相对于垂直轴与来自上述光源的入射光侧相反的一侧反射的反射光的面是反射光的反射面。 In the anti-glare portion, a surface that blocks reflected light from the reading medium on a side opposite to the incident light side from the light source with respect to the vertical axis is a light-reflecting surface. 5.如权利要求1~4中任一项所述的按压板,其特征在于: 5. The pressing plate according to any one of claims 1 to 4, characterized in that: 作为上述防眩部,具有在主扫描方向上延伸的第一防眩部或在副扫描方向上延伸的第二防眩部中的至少一个。 As the anti-glare portion, there is at least one of a first anti-glare portion extending in the main scanning direction or a second anti-glare portion extending in the sub-scanning direction. 6.如权利要求1~5中任一项所述的按压板,其特征在于: 6. The pressing plate according to any one of claims 1 to 5, characterized in that: 上述按压板能够安装到上述上置型扫描仪的主体, The above-mentioned pressing plate can be attached to the main body of the above-mentioned top-mounted scanner, 7.如权利要求1~6中任一项所述的按压板,其特征在于: 7. The pressing plate according to any one of claims 1 to 6, characterized in that: 与上述读取介质侧相反的一侧的面使被入射的光扩散并反射。  The surface on the opposite side to the reading medium side diffuses and reflects incident light. the
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